-gen
/dʒɪn/combining form
1
- Chemistry denoting a substance that produces something【化】表示“产生, 发生物, 原”：
oxygen
allergen.
2
- Botany denoting a substance or plant that is produced【植】表示“生成物”, “生成的植物”：
cultigen.
词源
via French -gène from Greek genēs '-born, of a specified kind', from gen- （root of gignomai 'be born, become', genos 'a kind'）.